http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임현교 ( Hyeon Kyo Lim ),변상훈 ( Sanghun Byun ),김현정 ( Hyunjung Kim ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.4
Usually risk assessment is performed for the safety of diverse industries though, many kinds of risks cannot be analyzed effectively by using classical probability models due to lack of experience data and impreciseness of human decision making. For these reasons, fuzzy risk assessment utilizing subjective judgment and experience of skillful experts has been considered as a solution. In this study, to comprehend the relationship between conventional fuzzy theory and human conceptual images on risks, linguistic variables were reviewed with reference to fuzzy membership functions, especially in the Korean language. As interviewees, about a hundred people including students as well as safety engineers voluntarily participated. The research results showed that most people were in favor of adjective expressions decorated with adverbs rather than naive expressions such as “high” or “low”, and that directly translated linguistic variables were not appropriate for the Korean people in risk assessment as far. Therefore, with consideration of the selection tendency by the Korean people in linguistic variables, it could be concluded that 5 level expressions would be most favorable for linguistic variables in risk assessments in Korea.
한국어 퍼지 언어변수를 이용한 리스크 평가의 논리적 일관성
임현교 ( Hyeon-kyo Lim ),변상훈 ( Sanghun Byun ) 한국안전학회(구 한국산업안전학회) 2016 한국안전학회지 Vol.31 No.4
Usually, a risk can be expressed as a product of likelihood and consequence of a hazard factor. Therefore, conventional risk assessment is carried out by frequency analysis and severity analysis, in turns. However, it is well known that intuitive thinking is another excellent way of thinking of human beings. This study aimed to confirm whether there exist any difference in risk assessment results derived by two different procedures - intuitive and analytical. Thus, the present study showed 10 different illustrations to 30 undergraduate students. Their responses were organized as fuzzy membership functions, and summarized as risk assessments, and compared. The results were also verified with the help of statistical hypothesis testing, which showed no significant difference. On the contrary, however, similarity measure used in fuzzy set theory was not credible as anticipated. Many cases failed to satisfy statistical hypothesis even with similarity measure higher than 0.60 so that only a trend could be accepted. In addition, a subject showed a somewhat consistent logical discrepancy in his response, which implied the necessity of sincere analysis in fuzzy formulations.
JORDAN DERIVATIONS ON NONCOMMUTATIVE BANACH ALGEBRAS
PARK, KYOO-HONG,KIM, BYONG-DO,BYUN SANGHUN 서원대학교 기초과학연구소 2001 基礎科學硏究論叢 Vol.15 No.-
In this paper we shall give a slight generalization of J. Vukman's Theorem. And show from the result that the image of a continuous linear Jordan derivation on a noncommutative Banach algebra A is contained in the radical under the condition [D(χ), χ]E(χ) ∈ rad(A) for all χ ∈ A. And we show some properties of the derivationts on noncommutative Banach algebras. AMS Mathematics Subject Classification : 46H40.46J10,47B47 Key words and phrases : torsion free ring, derivation, Jordan derivation, prime ring, semisimple, noncommutative Banach algebra.